It's place has been occupied by the Jane Eyre Challenge (which isn't terribly challenging). There have been a lot of complaints, not sure how GR is going to respond. You can also access the challenge link from your profile page. It's all the way down on the right.
The widget now lets you know where you stand in your progress toward your goal ... whether you are ahead, behind, or on target to complete the number of books you specified.
Goodreads is making it easy to track your total.